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A136034
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a(n) = smallest number k such that number of distinct prime factors of numbers 2^k-1 A000225 is exactly n.
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0
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2, 4, 8, 12, 20, 24, 40, 36, 48, 88, 60, 72, 150, 132, 120
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| First occurrence of n in A046800
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CROSSREFS
| Cf. A000225, A003260, A016047, A046051, A046800, A049479, A088863, A136030, A136031, A136032, A136033.
Sequence in context: A049696 A206350 A127405 * A059793 A118029 A049322
Adjacent sequences: A136031 A136032 A136033 * A136035 A136036 A136037
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KEYWORD
| nonn
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AUTHOR
| Artur Jasinski (grafix(AT)csl.pl), Dec 11 2007
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